公开(公告)号：US06279495B1

公开(公告)日：2001-08-28

申请号：US09609668

申请日：2000-07-03

申请人： Ibrahim Karidio ,  Victor Uloth ,  Klaus Weiss

发明人： Ibrahim Karidio ,  Victor Uloth ,  Klaus Weiss

IPC分类号： F23G902

CPC分类号： F23L3/00 ,  D21C11/12 ,  F23C5/28 ,  F23L9/00

摘要： A method and an apparatus for optimizing the combustion air system in a power boiler or chemical recovery boiler by improving fluid flow and gas mixing are disclosed, whereby one can increase boiler capacity and combustion uniformity and reduce particulate and gaseous emissions. The method involves interlacing of the secondary and, where applicable, the tertiary air supply through opposing air ports on all four walls of the boiler, and is implemented by alternately opening wide or partially closing a port damper on one side, while partially closing or opening wide a port damper on the opposite side, such that a 70-100% open damper on one side opposes a partially closed (10-40% open) damper on the other and vice versa in an alternating fashion, along opposing walls. In a preferred embodiment, the optimization is further enhanced by balancing primary air flow, achieved by adjusting port dampers and windbox pressures so that the primary air flow is evenly distributed between opposite walls, between all four walls of the boiler and between individual airports on each wall. Windbox pressure and other key measurements of boiler operation ensure proper balancing and an adequate interlacing of air flows at the primary, secondary and tertiary elevations, respectively.

摘要翻译： 公开了一种通过改善流体流动和气体混合来优化动力锅炉或化学回收锅炉中的燃烧空气系统的方法和装置，由此可以增加锅炉容量和燃烧均匀性并减少颗粒物和气体排放。 该方法包括在第二级和第三级空气供应通过锅炉的所有四个壁上的相对的空气端口进行交错，并且通过在一侧上交替地打开宽或部分地封闭端口阻尼器来实现，同时部分地关闭或打开 在相对侧的宽端口阻尼器，使得一侧上的70-100％打开的阻尼器沿着相对的壁以交替的方式与另一侧的部分闭合（10-40％开放）阻尼器相反，反之亦然。 在优选实施例中，通过平衡通过调节端口阻尼器和风箱压力获得的一次空气流量来进一步增强优化，使得一次空气流均匀地分布在相对的壁之间，在锅炉的所有四个壁之间以及各个机场之间 壁。 风箱压力和锅炉运行的其他关键测量分别确保主，二，三级海拔高度平衡和充分的空气流动交错。